Natural gas hydrogen-doped pipeline dynamic mixer

Abstract

The utility model discloses a natural gas hydrogen-doped pipeline dynamic mixer which is characterized in that a front fluid director, a rear movable support and a connecting shaft are arranged in a pipeline, one end of the connecting shaft is rotatably connected with the front fluid director, the other end of the connecting shaft is rotatably connected with the rear movable support, a fluid deflector is arranged on the front fluid director, and the rear movable support is arranged on the rear movable support. The flow guide plates are evenly fixed to the front flow guide device, the impeller is fixedly arranged at the position, close to the front flow guide device, of the connecting shaft, and the spiral blade is fixedly arranged at the position, away from the front flow guide device, of the connecting shaft. The device has the advantages that fluid can be continuously sheared and transported during rotation, energy loss during mixed flow is reduced, mixed gas is continuously collided due to rotation, uniformity of the mixed gas is improved, and the device is simple in structure and convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model belongs to the technical field of natural gas hydrogen blending transportation, and specifically relates to a natural gas hydrogen blending pipeline dynamic mixer. Background Art

[0002] Hydrogen energy has begun to develop rapidly in all walks of life. The production, transportation and use of hydrogen have become the most concerned objects at present. In terms of transportation, due to the influence of hydrogen embrittlement, there has been no substantial progress in the material of hydrogen transportation. Since 2000, natural gas hydrogen blending has been studied in depth. The commonly used pipeline mixer for hydrogen blending is a static mixer. The static mixer is a mixing device without moving parts. It uses a fixed structure to change the flow state of the fluid in the pipe to achieve good dispersion and mixing between different fluids. Since the density of hydrogen is smaller than that of natural gas and the flow rate of commonly used hydrogen pipelines is low, the uniformity of the gas after mixing is not ideal, and the resistance is large, resulting in large energy losses. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a natural gas hydrogen blending pipeline dynamic mixer.

[0004] The specific plan is as follows:

[0005] A natural gas hydrogen blending pipeline dynamic mixer, wherein a front flow guide, a rear movable bracket and a coupling are arranged in the pipeline, one end of the coupling is rotatably connected to the front flow guide, and the other end of the coupling is rotatably connected to the rear movable bracket, a guide plate is arranged on the front flow guide, and the guide plate is evenly fixed on the front flow guide, an impeller is fixedly arranged on the coupling and at a position close to the front flow guide, and a spiral blade is fixedly arranged on the coupling and at a position away from the front flow guide.

[0006] The guide plates are evenly arranged along the circumference of the front guide, one end of the guide plates is fixedly connected to the front guide, and the other end of the guide plates is fixedly connected to the inside of the pipeline.

[0007] The front deflector is in a capsule shape.

[0008] Bearings are arranged inside the front deflector and on the rear movable bracket. One end of the connecting shaft is rotatably connected to the front deflector through the bearing, and the other end of the connecting shaft is rotatably connected to the rear movable bracket through the bearing.

[0009] The rear movable bracket includes a shaft sleeve, support bars are evenly fixed on the shaft sleeve, and the inner wall of the pipe is also provided with a number of blocks equal to the support bars. The blocks are evenly fixed on the inner wall of the pipe and are connected with the support bars. A disassembly gap is also provided between every two adjacent blocks, and the spacing of the disassembly gap is greater than the width of the support bar.

[0010] The impeller is provided with a plurality of blades, and an impeller shaft sleeve is provided on the impeller. The impeller is fixedly connected to the connecting shaft through the impeller shaft sleeve.

[0011] The spiral blades are fixed on the connecting shaft with a fixed pitch.

[0012] The utility model discloses a natural gas hydrogen blending pipeline dynamic mixer. Natural gas and hydrogen with a certain pressure and flow rate enter the pipeline body, are blocked by a front deflector and the gas is compressed to the inner wall side of the pipeline, so that the kinetic energy of the gas is further improved, and then the gas with a large amount of kinetic energy is converted into an ordered gas through a deflector and impacts an impeller, so that the impeller rotates, and the natural gas and hydrogen are preliminarily mixed here. The rotating impeller transmits torque to the spiral blades through the connecting shaft, and the spiral blades produce a shearing and diversion effect on the fluid during the rotation process, and the preliminarily mixed gas is further stirred and mixed, and finally the mixed gas flows out from the outlet;

[0013] Compared with the current technology, the kinetic energy of the flowing medium in the pipeline is used to make the internal device rotate. During rotation, it can continuously shear and transport the fluid, reducing energy loss in the mixed flow process. At the same time, the rotation drives the mixed gas to continuously collide, thereby improving the uniformity of the mixed gas. The structure is simple and easy to disassemble and assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 yes Figure 1 Left view of .

[0016] Figure 3 yes Figure 1 Right view of . DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the implementation of the utility model, not all of the implementation. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] like Figure 1As shown, a natural gas hydrogen blending pipeline dynamic mixer, a front guide 7, a rear movable bracket 8 and a connecting shaft 5 are arranged in the pipeline 1, one end of the connecting shaft 5 is rotatably connected to the front guide 7, and the other end of the connecting shaft 5 is rotatably connected to the rear movable bracket 8, a guide plate 3 is arranged on the front guide 7, and the guide plate 3 is evenly fixed on the front guide 7, an impeller 2 is fixedly arranged on the connecting shaft 5 and close to the front guide 7, and a spiral blade 4 is fixedly arranged on the connecting shaft 5 and away from the front guide 7.

[0019] like Figure 2 As shown, the guide plates 3 are evenly arranged along the circumference of the front guide 7 , one end of the guide plates 3 is fixedly connected to the front guide 7 , and the other end of the guide plates 3 is fixedly connected to the inside of the pipeline 1 .

[0020] The front deflector 7 is in the shape of a capsule.

[0021] Bearings 6 are provided inside the front deflector 7 and on the rear movable bracket 8. One end of the connecting shaft 5 is rotatably connected to the front deflector 7 via the bearing 6, and the other end of the connecting shaft 5 is rotatably connected to the rear movable bracket 8 via the bearing 6.

[0022] like Figure 3 As shown, the rear movable bracket 8 includes a sleeve 10, on which support bars 12 are evenly fixed, and the inner wall of the pipe 1 is also provided with a number of blocks 9 equal to the support bars 12, the blocks 9 are evenly fixed on the inner wall of the pipe 1 and are connected with the support bars 12, and a disassembly gap 13 is also provided between every two adjacent blocks 9, and the spacing of the disassembly gap 13 is greater than the width of the support bar 12.

[0023] In this embodiment, there are four support bars 12, which are evenly fixed on the sleeve 10. There are also four stoppers 9, which are arc-shaped and evenly fixed on the inner wall of the pipe 1 to provide a reaction force for the entire rotating part. The support bar 12 of the rear movable bracket 8 slides into the pipe through the disassembly gap 13, so that the sleeve 10 is inserted into the bearing, and then the rear movable bracket 8 is rotated so that the support bar 12 is in contact with the stopper 9, thus completing the installation of the rear movable bracket 8. If the maintenance process requires disassembly, the rear movable bracket 8 needs to be rotated so that the support bar 12 rotates to the disassembly gap 13, and then the rear movable bracket 8 is pulled out of the pipe 1 to complete the disassembly of the rear movable bracket.

[0024] The impeller 2 is provided with 4 to 6 blades, and an impeller sleeve is provided on the impeller 2. The impeller 2 is fixedly connected to the connecting shaft 5 through the impeller sleeve.

[0025] The spiral blade 4 is fixed on the connecting shaft 5 with a fixed pitch.

[0026] The natural gas hydrogen blending pipeline dynamic mixer comprises two parts, one part has a rotating part, and the other part is a fixed part.

[0027] The rotating parts include: an impeller 2, spiral blades 4, a coupling 5 and bearings 6; the impeller 2 adopts a 4-6 blade structure, which is connected to the coupling 5 through an impeller sleeve to provide a source of rotational power, and the spiral blades 4 are welded on the coupling 5 at a certain interval to ensure continuous mixing and output of the fluid. Bearings 6 are set at both ends of the coupling 5 to ensure the rotation of the coupling 2.

[0028] The fixed parts include: pipeline body 1, guide plate 3, front guide 7, rear movable support frame 8, stopper 9 and sleeve 10. The guide plate 3 is fixed on the surface of the front guide 7, and one end of the connecting shaft 5 is embedded in the center of the front guide 7 through a bearing, and they work together to complete the gas compression and rectification; the rear movable support frame 8 is used to remove the rotating part during maintenance; the stopper 9 is fixed on the pipeline body 1 to provide reaction force for the entire rotating part.

[0029] The specific working process of the natural gas hydrogen blending pipeline dynamic mixer is as follows:

[0030] like Figure 1 As shown, Figure 1 The arrow on the left side of the middle pipeline is the natural gas inlet, and the arrow on the top of the pipeline is the hydrogen inlet 11. When natural gas and hydrogen with a certain pressure and flow enter the pipeline body, they are blocked by the front guide 7 and the gas is compressed to the inner wall side of the pipeline, so that the kinetic energy of the gas is further improved. Then, the gas with a large amount of kinetic energy is converted into an ordered gas through the guide plate 3 and impacts the impeller 2, so that the impeller 2 rotates. The natural gas and hydrogen are preliminarily mixed here. The rotating impeller 2 transmits torque to the spiral blade 4 through the connecting shaft 5. The spiral blade 4 produces a shear and diversion effect on the fluid during the rotation process. The preliminary mixed gas is further stirred and mixed, and finally the mixed gas flows out from the outlet.

[0031] Compared with the existing technology, the natural gas hydrogen blending pipeline dynamic mixer utilizes the kinetic energy of the flowing medium in the pipeline to rotate the internal device, which can continuously shear and transport the fluid during rotation, reducing energy loss in the mixed flow process. At the same time, the rotation drives the mixed gas to continuously collide, thereby improving the uniformity of the mixed gas. The structure is simple and easy to disassemble and assemble.

[0032] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A natural gas hydrogen blending pipeline dynamic mixer, characterized by: A front flow guide (7), a rear movable bracket (8) and a connecting shaft (5) are arranged in the pipeline (1); one end of the connecting shaft (5) is rotatably connected to the front flow guide (7); the other end of the connecting shaft (5) is rotatably connected to the rear movable bracket (8); a guide plate (3) is arranged on the front flow guide (7); the guide plate (3) is evenly fixed on the front flow guide (7); an impeller (2) is fixedly arranged on the connecting shaft (5) at a position close to the front flow guide (7); and a spiral blade (4) is fixedly arranged on the connecting shaft (5) at a position away from the front flow guide (7).

2. The natural gas hydrogen blending pipeline dynamic mixer according to claim 1, characterized in that: The guide plates (3) are evenly arranged along the circumference of the front guide (7); one end of the guide plates (3) is fixedly connected to the front guide (7), and the other end of the guide plates (3) is fixedly connected to the inside of the pipeline (1).

3. The natural gas hydrogen blending pipeline dynamic mixer according to claim 1, characterized in that: The front flow guide (7) is in the shape of a capsule.

4. The natural gas hydrogen blending pipeline dynamic mixer according to claim 1, characterized in that: Bearings (6) are provided inside the front deflector (7) and on the rear movable bracket (8); one end of the connecting shaft (5) is rotatably connected to the front deflector (7) via the bearing (6); and the other end of the connecting shaft (5) is rotatably connected to the rear movable bracket (8) via the bearing (6).

5. The natural gas hydrogen blending pipeline dynamic mixer according to claim 4, characterized in that: The rear movable bracket (8) comprises a shaft sleeve (10), on which support bars (12) are evenly fixed, and on the inner wall of the pipe (1) there are also provided blocks (9) equal in number to the support bars (12), the blocks (9) are evenly fixed on the inner wall of the pipe (1) and are in contact with the support bars (12), and between every two adjacent blocks (9) there is also provided a disassembly gap (13), the spacing of the disassembly gap (13) being greater than the width of the support bars (12).

6. The natural gas hydrogen blending pipeline dynamic mixer according to claim 1, characterized in that: The impeller (2) is provided with 4 to 6 blades, the impeller (2) is provided with an impeller shaft sleeve, and the impeller (2) is fixedly connected to the connecting shaft (5) via the impeller shaft sleeve.

7. The natural gas hydrogen blending pipeline dynamic mixer according to claim 1, characterized in that: The spiral blade (4) is fixed on the connecting shaft (5) with a fixed pitch.

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